According to Indian Constitution, the power to notify a community as Scheduled Tribe lies with
The President
Article 366 (25) of the Constitution of India refers to Scheduled Tribes as those communities, who are scheduled in accordance with Article 342 of the Constitution. This Article says that only those communities who have been declared as such by the President through an initial public notification or through a subsequent amending Act of Parliament will be considered to be Scheduled Tribes.
The list of Scheduled Tribes is State/UT specific and a community declared as a Scheduled Tribe in a State need not be so in another State/UT. The essential characteristics, first laid down by the Lokur Committee, for a community to be identified as Scheduled Tribes are –